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![Calculate the area of a circular ring whose outer and inner radii are \\[12\\] and \\[10\\ cm\\]. A.\\[118.16\\ cm^{2}\\]B.\\[128.16\\ cm^{2}\\]C.\\[138.16\\ cm^{2}\\]D.\\[148.16\\ cm^{2}\\]](https://www.vedantu.com/question-sets/c74cc764-f0e2-401a-9c44-8a7fa4cf4c341391061485282133984.png "Calculate the area of a circular ring whose outer and inner radii are \\[12\\] and \\[10\\ cm\\]. A.\\[118.16\\ cm^{2}\\]B.\\[128.16\\ cm^{2}\\]C.\\[138.16\\ cm^{2}\\]D.\\[148.16\\ cm^{2}\\]")
Calculate the area of a circular ring whose outer and inner radii are \\[12\\] and \\[10\\ cm\\]. A.\\[118.16\\ cm^{2}\\]B.\\[128.16\\ cm^{2}\\]C.\\[138.16\\ cm^{2}\\]D.\\[148.16\\ cm^{2}\\]
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![Find the area of a circular ring formed by two concentric circles whose radii are \\[5.7\\text{ cm}\\] and \\[4.3\\text{ cm }\\] respectively. (Take \\[\\pi =3.1416\\])\\[\\begin{align} (A)\\text{ 43}\\text{.98 sq}\\text{.cm} \\\\ \\text{(B) 53}\\text ...](https://www.vedantu.com/question-sets/804befe2-6bc6-481d-9003-63c9711900e61570133689249567619.png "Find the area of a circular ring formed by two concentric circles whose radii are \\[5.7\\text{ cm}\\] and \\[4.3\\text{ cm }\\] respectively. (Take \\[\\pi =3.1416\\])\\[\\begin{align} (A)\\text{ 43}\\text{.98 sq}\\text{.cm} \\\\ \\text{(B) 53}\\text ...")